basic igcse chem memorisation

Hydrogen ion

$$H^+$$

Lithium ion

$$Li^+$$

Sodium ion

$$Na^+$$

Potassium ion

$$K^+$$

Silver ion

$$Ag^+$$

Ammonium ion

$$NH_4^+$$

Magnesium ion

$$Mg^{2+}$$

Calcium ion

$$Ca^{2+}$$

Barium ion

$$Ba^{2+}$$

Zinc ion

$$Zn^{2+}$$

Copper(II) ion

$$Cu^{2+}$$

Iron(II) ion

$$Fe^{2+}$$

Aluminum ion

$$Al^{3+}$$

Iron(III) ion

$$Fe^{3+}$$

Fluoride ion

$$F^-$$

Chloride ion

$$Cl^-$$

Bromide ion

$$Br^-$$

Iodide ion

$$I^-$$

Hydroxide ion

$$OH^-$$

Nitrate ion

$$NO_3^-$$

Bicarbonate ion

$$HCO_3^-$$

Oxide ion

$$O^{2-}$$

Sulfide ion

$$S^{2-}$$

Sulfate ion

$$SO_4^{2-}$$

Carbonate ion

$$CO_3^{2-}$$

Nitride ion

$$N^{3-}$$

Phosphate ion

$$PO_4^{3-}$$

Proton

Positively charged subatomic particle ($+1$) located in the nucleus that identifies the element

Electron

Negatively charged subatomic particle ($-1$) orbiting the nucleus involved in chemical bonding

Neutron

Neutral subatomic particle ($0$) located in the nucleus that adds mass

Cation

A positively charged ion formed when an atom loses electrons

Anion

A negatively charged ion formed when an atom gains electrons

Subscript

Small bottom number in a chemical formula showing how many atoms of an element are present in a molecule